<!DOCTYPE HTML> <html class="reftest-wait"> <body style="background:white;" onload="setTimeout(function(){document.documentElement.className = '';}, 0);"> <!-- Test that poster frame changes when you change the poster attribute. --> <video src="black140x100.ogv" preload="none" id="v" poster="blue250x200.png"></video> <script type="text/javascript"> document.getElementById('v').poster = 'red140x100.png'; </script> </body> </html>